Exemplo n.º 1
0
        /// <summary>
        /// Data Chunk
        /// </summary>
        private static void LoadDataChunk(WaveRIFF w, BinaryReader br, string fmt, UInt32 sz)
        {
            w.dataChunkHeader = fmt;
            w.dataSize        = sz;
            Debug.Assert(w.bitsPerSample == 16); // 16-bit sample only
            UInt32 sample_count = w.dataSize / 2;

            w.data = new Int16[sample_count];
            for (int i = 0; i < sample_count; ++i)
            {
                w.data[i] = br.ReadInt16();
            }
        }
Exemplo n.º 2
0
 /// <summary>
 /// Fmt Chunk
 /// </summary>
 private static void LoadFmtChunk(WaveRIFF w, BinaryReader br, string fmt, UInt32 sz)
 {
     w.fmtChunkMarker = fmt;
     w.lengthOfFmt    = sz;
     w.formatType     = br.ReadUInt16();
     //Debug.Log($"w.formatType:{w.formatType}");
     w.channels = br.ReadUInt16();
     //Debug.Log($"w.channels:{w.channels}");
     w.sampleRate = br.ReadUInt32();
     //Debug.Log($"w.sampleRate:{w.sampleRate}");
     w.byteRate = br.ReadUInt32();
     //Debug.Log($"w.byteRate:{w.byteRate}");
     w.blockAlign = br.ReadUInt16();
     //Debug.Log($"w.blockAlign:{w.blockAlign}");
     w.bitsPerSample = br.ReadUInt16();
     //Debug.Log($"w.bitsPerSample:{w.bitsPerSample}");
 }
Exemplo n.º 3
0
        /// <summary>
        /// Waveファイルのバイト列を解析
        /// </summary>
        public static WaveRIFF Load(byte[] binary)
        {
            WaveRIFF w = new WaveRIFF();

            using (var ms = new MemoryStream(binary))
                using (var br = new BinaryReader(ms))
                {
                    w.riff = br.ReadUTF8String(4);
                    if (w.riff != "RIFF")
                    {
                        return(null);
                    }
                    //Debug.Log($"w.riff:{w.riff}");
                    w.overallSize = br.ReadUInt32();
                    //Debug.Log($"w.overallSize:{w.overallSize}");
                    w.wave = br.ReadUTF8String(4);
                    //Debug.Log($"w.wave:{w.wave}");
                    while (br.EOF() == false)
                    {
                        string chunk_marker = br.ReadUTF8String(4);
                        //Debug.Log($"chunk_marker:{chunk_marker}");
                        UInt32 chunk_length = br.ReadUInt32();
                        //Debug.Log($"chunk_length:{chunk_length}");
                        if (chunk_marker == "fmt ")
                        {
                            LoadFmtChunk(w, br, chunk_marker, chunk_length);
                        }
                        else if (chunk_marker == "data")
                        {
                            LoadDataChunk(w, br, chunk_marker, chunk_length);
                        }
                        else
                        {
                            //Debug.Log($"IgnoreChunk marker:{chunk_marker} length:{chunk_length}");
                            br.ReadBytes((int)chunk_length);
                        }
                    }
                }
            return(w);
        }